Pyxicephalus currently contains three recognized species, viz. P. adspersus, P. edulis and P. obbianus, the former two of which have a long history of confusion. Parry (1982) described P. adspersus angusticeps from Beira, Mozambique, which was synonymized with P. edulis. We re-examine the taxonomic status of Pyxicephalus taxa from Mozambique, examining the types and contrasting them to congener...

Cloning confusion very cloning pronouncement has one guaranteed ingredient: controversy. This time, Atsuo Ogura (National Institute of Infectious Diseases, Tokyo, Japan) and Rudolf Jaenisch (Massachusetts Institute of Technology, Cambridge, MA) are duking it out. Ogura claims that most of the defects that Jaenisch has seen in his cloned mice were caused by the genetic instability of the embryon...

The ex-film censor looks at the way ideas about what is Pornographic alter and suggests that although times change only some people change with them.

Criticism of journalists for creating confusion and needless anxiety is sometimes fully justified. On other occasions, at least part of the blame lays elsewhere. Consider the following. A headline in the Sunday Times on 14 May read: “Killer bug alert over organic vegetables.” The story continued “Tesco yesterday withdrew all organic mushrooms from its shelves after routine checks by environment...